Development and Implementation of Water Safety Plan in Kondawatuwana Water Supply Scheme

Abstract

A Water Safety Plan (WSP) for Kondawatuwana Water Supply Scheme (KWWSS) was developed by National Water Supply and Drainage Board (NWSDB). Possible hazards were identified through field visits. The risks were assessed using a semi-quantity approach. The existing control measures and the verification of control systems were used to assess the residual risks and form a prioritized standard risk matrix. Based on this, an improvement plan was drawn up to suggest corrective actions and a time frame for implementation. The findings of this study are being used to modify or repair components of the water supply system and upgrade management procedures. Water Safety Index is introduced as a bench marking management tool in order to monitor the progress of implementation of WSP. This paper highlights the lesson learned during the development and implementation of the WSP and the key challenges faced.